Transcript Document
By : Matt Iannacone
Sammy Akato
Stephen Zimmerman
Design
Our design consists of
a Kenex box structure,
a generator, and a fan.
As the fan turns due to
wind power the
magnets will rotate
within the generator
producing the voltage
needed.
Fan Design
Created out of balsa wood and tissue paper
Water wheel style
Supported by Kenex
Three blades
Extremely light
Generator Design
Insulated wire wrapped
around a coke bottle
Wrapped 700 times
Placed and supported in a
box structure
Earth magnets run within
the coils
Connected to the fan
Mechanical and Electrical Aspects
Wind energy captured by the fan
The more wind the more rotations
Magnets rotate
Magnets create electrical current
Energy loss due to friction, generator resistance, and fan
flaws.
Construction Issues
The generator
Difficult to create
Problem with efficiency
The fan
Fragile
Sensitive to moisture
Overall
Project was challenging
Time consuming
Efficiency
Equations
Ptheoretical = ½(ρAV3) – density(air) * surface area(fan) * air velocity
Ptested = VA – volts * amps = watts
(Ptested / Ptheoretical) * 100 = efficiency
Values
Ptheoretical = ½ * 1.225 * .0383866) * 1.73 = .115513 watts
Ptested = 1.4 * .0035 = .0049 watts
E = (Ptested / Ptheoretical) * 100 = 42.42% efficiency
Conclusion
Project was successful
Learned basic concepts of
electricity and generators
Development of teamwork
Better materials could produce a
higher efficiency
Spent $21.29
This project is relevant because
at a large scale windmills are
used to produce green
electricity for everyday life.